Research on moisture loss in coal robotic sample preparation system
ZHENG Bo
WANG Zenghui
LIU Jun
YANG Yong
GUO Weicheng
Abstract：Total moisture is an important index to calculate the calorific value of coal on an as-received basis,which is related to the pricing and practical application of coal.With the development of fuel intelligence,it is an inevitable trend to replace manual sample preparation with robotic sample preparation.However,there is bound to be a certain amount of moisture loss in coal during the mechanical sample preparation process.Therefore,it is necessary to evalu-ate the moisture loss before the robotic sample preparation system takes total moisture sample.The main factors affect-ing moisture loss in the coal robotic sample preparation system are analyzed,and the experiments are conducted with weighing method.Different types of coal such as anthracite,bituminous coal,high-volatile bituminous coal,and lig-nite are used to enter the storage,crushing,transportation,and division process of the robotic sample preparation system,and the moisture loss rate of the robotic sample preparation system can be obtained.The high water evapora-tion pressure difference in the crushing process is the main factor leading to moisture loss in the robotic sample prepa-ration system.The moisture loss of the robotic sample preparation system can be reduced by optimizing the sample preparation process,reducing the curshing process,cleaning the sample,sealing the transportation,and timely conducting equipment inspection and maintenance,and it is recommended to correct for moisture loss when there is substantial moisture bias.
Keywords：moisture lossrobotic sample preparation systemweighing methodtest methodsreduction processsample preparation processdivision
Publication Date：2023-11-10
Pages：9( 87-95 )